Casper, which is 12 years old, boards the No3 service at 10.55am from outside his home in Plymouth, Devon, and travels the entire 11-mile route before returning home about an hour later. On the route, the cat passes an historic dockyard and naval base, a city centre, several suburbs and the city's red light district. Susan Finden, 65, a care worker who is Casper's owner, said: "Casper has always disappeared for hours at a time but I never understood where he was going. "I called him Casper because he had a habit of vanishing like a ghost. But then some of the drivers told me he had been catching the bus. "I couldn't believe it at first, but it explains a lot. He loves people and we have a bus stop right outside our house so that must be how he got started - just following everyone on. Read more of the article here